Matrix with Dynamic Size

1. Modify your class CMatrix which can only store a 3*3 matrix. From now on, we want to accommodate a matrix with size m by n (m_Row = m and m_Column = n, and m is not necessarily equal to n). Therefore, you'll need the technique of dynamic memory allocation, as illustrated in P.438.
2. Design the following member functions:
   1. A constructor CMatrix(int n = 0), which will dynamically allocate an integer array with n*n entries, let m_Row = m_Column = n, and initialize all entries to become 0.
   2. Another constructor CMatrix(int m, int n, int v = 0), which will dynamically allocate an integer array with m*n entries, let m_Row = m, m_Column = n, and initialize all entries to be v.
   3. A copy constructor CMatrix(CMatrix& B) which will allocate an integer array with the same size as matrix B, and duplicate the corresponding entries in matrix B.
   4. A destructor to release the integer array allocated for this object, and print out a message like "Destructor called for a m*n matrix", where m is the value of m_Row, and n is the value of m_Column.
   5. Print() - print out the matrix with m_Row rows and m_Column columns. Note that integers in a column should be right-justified.
   6. MaxEntry() - returns the maximum of absolute value among all entries. This is helpful to determine the maximum width required in printing entries when you want to keep them right-justfied.
   7. Because m_Row and m_Column are private data members, you need to design public member functions Row() and Column() to return the value of m_Row and m_Column, respectively.
   8. Get(i, j): returns the value of the (i*m_Column+j)th entry of the dynamically allocated array.
   9. Set(i, j, n): assigns n to the (i*m_Column+j)th entry of the dynamically allocated array.

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   Test your class definition with this main program. Save your class definition in "matrix.h" and compile the program with "clang++ matrix-4.cpp". The running result should look like:

   
   
   Constructor called for a 3*4 matrix.
   Copy Constructor called for a 3*4 matrix.
    1 1 1 1
    1 1 1 1
    1 1 1 1
    88  1  1  1
     1  1  1  1
     1  1  1  1
   Destructor called for a 3*4 matrix.
   Destructor called for a 3*4 matrix.